Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c241ffe9daa8f4509e2fd45a500e17ba86245b068e57d074f95179994445fa3a' 
  AND token = 'PMXWvHfkAgKcpYraGLpE1i5Bka63uJZbVxHEv6Ilaoc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00100

JSON explain

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