Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bdbd59d36a1bff35e5efa1779cc36cdd88d38717753f9e3ac18abf966382bdd0' 
  AND token = 'EdlG4XPcLRWqgwaAhk6NlSVnCS38SM5B0soy55XM1e4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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