Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4ee31b6db258811b9bc5215fe276a7df8dbbb69ed10f528fc3e44b1398523250' 
  AND token = 'CcrweVNu2EOfPDfqGm5NGUuubq9EMXt3Znz3BZhzXb8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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