Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bdcfd0404ea8f4e009f56c8955bd21471dcbdc2cc3cbdcbae2259adc1f91c19' 
  AND token = 'jbwO6mjd7AM+go4Hbb9tFsPZV9zsJPsAvTu6Zfze4C4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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