Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fe6c7387ea3357ffd3a446ee3a5457edcd3156f2458fc8029e8ab039431f5fd6' 
  AND token = 'TpZFv/rUyCh4ioTP38j2880YAYM2+2NjK9J2cy00NRI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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