Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1922cb5da1f46545620802f8954739420045cf3e72ce6f99b590f2f4b93321b' 
  AND token = 'ECOYq3CM21r4jTYyqHKWemSnEOPfuzppWL63YR0vg6M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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