Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '597cc1c89496da6988a59f708aa407556917f80d80400d0d57400a4e79fe74c7' 
  AND token = 'OwH+xTPjp3l2Y9cMSh+etH/4Wscuj7LwC7ibHinaX7M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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