SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '14dabdc855391a6d7405699c6ae2f510e8081c912f27c44e190b944278766533' 
  AND token = 'FXoUfePVxJ1WAPTEG3na0GG/l3SoHY89sh9j5ZkOOZw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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