Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2bc1457d339ed031eb4c2cafaec10b0643518a36ba1f09dfcdc333a2c179fbf0' 
  AND token = 'JWzPulHDc5UKlc86kDCTaY+aIFUkyx3WFDOJZRL7awY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}