Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c1edc21bc2f4993717406f8b8639bae34749d9b5c29b64c755e40eab829b45c8' 
  AND token = 'FOV0u1wy7VCn+C1tx9UOPp3zbL/LEKHiSBVkW98NDLk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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