Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '924748dbdcf896f1d3bd966a2cb2323fc247ea2d9addf1ef31c95bfca18d3697' 
  AND token = 'NNehn9mBPugeCdTuHzzssveW9Rl+9UrwBNCKWW2KZP0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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