Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04e8f88214da0df761b0a8916ccaa27c461ad50f92df7620920602523772f62d' 
  AND token = 'ITKXOcobg85fac9AMeeWMsKEaQkT2EkHCxFunR0P8E4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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