Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0c6960f406ed2acaf2011edc7a156d3cc4e1f97a47b496cecd26d81b1367b0b9' 
  AND token = 'IX+lrocas8BBg6qZ1Fhp5FvF6h48BH38gxJK66OCkTU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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