Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '216135bf9f4e250535abb7930bc943c56ccf7dd11abf31fbd5029c3125695953' 
  AND token = 'r8GzWtfR0fp4oKhkt/b0CvEYnHZl+RfI+nXSDH6dQCw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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