SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f99898244ca2c35c6e509b57dbe981c99ae65ddcc55050ae333637f9a8a744ce' 
  AND token = 'KEVfBLUidd+AZbLm5u/LqG65J38ebtzgHLwqe/PGZjY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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