Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ad42316bb51471cc0da7e5b003ae9f944ec0f9ab3fae7cc0f3421a8c8fe6050d' 
  AND token = '+tHolDRNi40635hrpVApfODS6MCr/i/jCoUHaoBldkg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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