Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f2f4c957f195e843f607b68b96019c6e03ec58471ca36a3bd9cd0d30241f13fd' 
  AND token = 'lWjMM5x2AsyyFwD4YTRPItBNZWDCX/NVK1L0NJmTPlo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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