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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '743181c57afb6718007ad95d2b5c4be4a919a172adbd820d8dd8ac8c82d07013' 
  AND token = 'QMbdfbq5W3lF8b2uvkkMQ9JxrGU4XAQQ+JDAPf8ajfg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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