Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '592029f4466b0032e7c6411ecb75e4b22dda3a1523dbae313c1db3c48034d2de' 
  AND token = '90u87uoJ/cDJckAvy8uG3iJdx6xp5lZftSowuvcheps=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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