Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01afcc385e373700d0d01f7ce0fdf92586aa0c62361b6db9e2962962f97f6f99' 
  AND token = 'h1Wjqn8Y2OtPy40lZryuMQ2iGLFexDQADpXiNBLv+Lc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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