Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e173127a6f74b10c71721b57b8d48c68b15c9272b9477638fa3961d500405b68' 
  AND token = 'tb7ob4gC9/LdtV1jLsCgYq761qTM6qE9Sh4Y1jJ0LQw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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