Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bee30b712c6ef2b90243c8f83a23c3661ca91a36479d154a643a667b7273f2bc' 
  AND token = 'qu4BZ8cJ/IVy963cNnriLwXQJaBCoRElHHDUSA0XvPI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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