Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd551b854db1be0f5f35675c2d27c746951fddc88bfbfc7b61ba1f6f5466de84c' 
  AND token = 'ZpWXNwq3Ub9jrNMUJ/xiHd47q2CXemM8yRZtsMnteHg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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