Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93cdc2a4030fb99418eb2304943da5b88098b50d0b2539f5b3ab22b53d35b4d2' 
  AND token = 'aazUgWFfJXGf9kJ3D+gCiObitouumrNPFvy/KkjDWQU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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