Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8975b0060eb17e0015d3b6f3180eb22ca44bd647fbc460a3ddd3a0d2ca4573c3' 
  AND token = 'hNfi1/NOac4ujw2seXz0iqlyYQ5lCl+by+ZfOxQXGLQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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