Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e557585ede871684bc4700eacba858ba857b7e32732c2244e50cf96c16359920' 
  AND token = 'kdo1bBQS9OhbcqRmZnH/Bh37PBE69Uznw/maNmpr5+A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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