Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0587b353230ccc13b263dd243425d6a596a73c4315640b35acb91975f8cbc86e' 
  AND token = 'co2KhEXJM+3vIl4HTNRJjD3svycIqRF1T2OJyFiPOko=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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