Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '55b6aa6b042ae9680f336768310de7a355742a83f644552b4c582e7bdf9e8bde' 
  AND token = 'RnEpedOzbfQR8z6wpuEHNLpnVx74yO8MEqNJZBiG1H8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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