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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5c00ac53a7c7012ec1b284f94ddcc491b1e6ae7e92ab7d797ad9a61c32d9ae56' 
  AND token = 'l+s/hHoN43kRVHdIs3bUXfa01ORv4L+m9jCLk1Lu2nw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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