Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '150c5c9f2ad01d6814022e439abcec19a8d7f47b7a8c82d01f044c035ded86d3' 
  AND token = 'abtR2tKwJ0JuU2aPBaOksv1Uhe/AizF8brSB3ncTPm0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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