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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '197fd200de7d3487a4fc9edd93e84807fa8cc219e5aba9a9eefb62862eec5743' 
  AND token = 'e3L0TBmWbD40SRxr/i9Pzha+ejIVnXav6ZIDa8y53Ac=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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