Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c19a2b925e0a61c7260f0a00169c49a070561698628a9a6b478887a0c4968c10' 
  AND token = 'zQKepBdzMh8Ut4jgItQ3Xwd2h/5a0vumRDktuG9V8QA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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