Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3a39a7bf1c35111c69cd65cada3784e7047dba990051e0a4876be1fc8d8d164b' 
  AND token = 'yC0kg6/PsKHENK5Sk/cyRCcq7ORkYvuQOlt6g4ORj2A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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