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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd1808d2f65339695e059a36e16a7fc4c556e0de28c504fba79b36001ba703d7' 
  AND token = 'X3fTdHdQrdFTixLcg4dTjvJ8PYROosqvoi5EaKt89es=' 
  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"
    }
  }
}