Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5223fe1ca4ae360397c03e1d70301301cf98ac0de0a205addeb066117f9380de' 
  AND token = 'agnL9SFPEdF/wyOZKXwfTrCXnrW1oKSmSpW2kpe1O28=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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