Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17b49dbf3aeb9302376849c597fca1d499ea42a2ab982f7907d6a86dab5d4789' 
  AND token = 'RXOVmMfUOF1fCxvOg38W4diU7N1M5ToFOdK7np0fYrw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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