Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93cfd938ec1d9c4ef5fac837f5ea59cf0470c559626af2689f3be49c277d3aa5' 
  AND token = 'G2nThqJy+1zSRvzbsNeAiiTjdQGds3weoN3GTyrLsA0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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