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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06abace33e8c0499f0b8a6d611981372b56c704c6f013c36ca9007c7dd2f55fe' 
  AND token = 'F7AV6pogApZz/xvDn2WHFLERMgyZ/ReyHupsjQaosFc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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