Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fb885e6c1f84b8ffac47eea4635ae5004049ef1fc87eeac83acc2bf3219d25ae' 
  AND token = 'Ik1duiUreOYENlKYuYb9Y4dKjDam8YjQPczADPQ29YE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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