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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b43b3618706b5959d183ac5166b221f203d5d630d2030c4d1cb26ba55fecc0f1' 
  AND token = '7w2PJ+WCVc8kBhYsF2pp4lsbFii+h/Cszilh57o56NA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}