Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bddff6ab03e98c177090be5a9647f7173071a74e09c3bc5e88fc91fcbec8d767' 
  AND token = '0gw6Pg2yf0ZSugJ5pF7M0D792uBz1CeUHJRPXsVG8JQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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