Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f1628512b220482f77cddc7c984fa86dc32c26c36e8c720fe076c5dbefbcb74' 
  AND token = 'HN+Z3N+InCgz+xG+d2RsuLzNKue4P6y4+W2YUzvu24I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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