Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5f1ca762da5ff1d7438b20f430f74ac813ae8f8bd5a809ca518422280a1dd43d' 
  AND token = 'LBOMNSvol2OCmuTx03IEmxoKeYWol1X0ZRneGoerkFY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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