Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce2c37fb37b2bb284511e397c723542af481020d2da54c50d35284a425004dff' 
  AND token = 'HCxweIiTwwfCu/WvYuoqlYyNNyqdr/RoSEE2rAbPLWs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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