Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9eac75f86cb85d17693d17b0a2c3a8c9ea235f76004708cdacc9d3a4fa115a12' 
  AND token = 'FEs9dDSLWm6md9XR73o42JKLd9t7IUjg3h8ThvWlHHY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00091

JSON explain

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