Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '86f7f4d219a8f97258c168028cb5aa731962ab277c2a1f7db458947fa601232e' 
  AND token = 'FTFMrJwFWefIzHDZmSFZyrs6pwFr3NbtC+HNqYb+W/k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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