Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3aef716202e8084debfbbc0b193d377acdf07e20e6d47854dc9a6be09e6f385e' 
  AND token = 'O1wlwTLs3GMCQFJujUqVVENdDsUUrg0o9ini0fqDEt0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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