Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '027bf1962760d5369b5fbccb7ad4bc8980aa2b4301652097cfe1600d525aa005' 
  AND token = 'kB0UQ8urBf9hD3UnsCS4VUnx66Nv+DNtHeHA+io4Dq4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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