Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '54c404fce62b18bc514206afd4bc25478e314243ab25414bbed41eb4211276e6' 
  AND token = 'J+uIabhgo7avWMPNLsz7Fy5OKmsIEDyZJzSwmP+JJrE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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