Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2fa0d9777cf6f2d9ca33451d33b45107635c052049bdc4aa5d72c98ba9095fa0' 
  AND token = 'nzns1zyg9swHts0W8CSJx7Q9Za8LYME3ubd3tRO24Vo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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