SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5c4abe5ccac7e64a2ac4587b031c4d82a2918a53e7ac609fb823d6e68b410764' 
  AND token = 'jWVLS5i/VXuGGnBeIbUoCmCb7JftUSe/hPuNYFuJ2Pg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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