Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c2a27b9f1246732d677529465bc7e9c1036589f8cd26bae562af0f65d03d4301' 
  AND token = '7iNrL+X2PRWsFq9IGQ8lDSH002opL1nmDLSHAQqtVck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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