Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b6b753a0caaf2c10cdb72f4ab7c59ab0a1b6ad8dd3ae46a4f289d4f00eefeeb' 
  AND token = 'PJp+Ezb83m3YLw9yQEu/JcdHS6iqCNblscEYTe+WOFQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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