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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e1b10172c2ea3ec7ca77881c40bbd15e94210b518a5918156526677015009ea0' 
  AND token = 'ECIEJsT5oClOjV7zQ1/m1GBAP5Hnpv1JqNf4Nc/v/JA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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