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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9370e22776a4208a7f82238109093afce7d2f5443334ae09f9f0e820a3855766' 
  AND token = 'xC0umiPDXkU/+iFyoZ0394gupBlWacO/58mpfyyJQmw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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