Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '19136d9858b0abfbc0bce8d165658964deca73d06df025e2480b5e789bccebae' 
  AND token = 'dAW3Io5riUf+ExvLFo7h/6Oa7q1x1jmYeGLiUOqraao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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