Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9e1c0e77d8d907d9a17e372e725132e1b7bcb4df9fe88812d73ba6f918471867' 
  AND token = 'Atx2ZbD9DIGoPjeM+h+GU1uLngHGAR5wNtip/h461II=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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