Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c9b126cd2a3dc13f4f2232a8d62205ab17bd7ec702138617323b7ebd170a7c6' 
  AND token = 's6qxecKdJfMwOvuKqeZsMe902B0gufdsRJvnJ5LV4Ro=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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