Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dbca73a771f6d5d1cf7c0e48493ae67029b10da2eb88f13d59d31c3b22b2b518' 
  AND token = 'YX5iHsQNccCADQLuRskJseUgU25HXGCLlghboKuhTdQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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