Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '574231452c2df59ca23e18caed5dccafda39e564ce0253df370c47a0c6f32e32' 
  AND token = 'H7louVEEi2i2atxPvubIKM/uzvSs4VJwQ0rz3VdacBI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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