Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd7d4d6523e68fa3c07a7b287442ac8e680cb6d98a3b792733a55a1a3654d23d6' 
  AND token = 'zKHyTVdW/skM573yOxdbDt0U3RQ0q7muG4r0kY5ZFDE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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