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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b6ea8b1b5a04f3040cacc5145cb8ce8fd3653e1cb9ebfdd3d983a00e07e03de' 
  AND token = 'A/wi2024w5ejEPZrdS1RQMQxnZU6qaJQw0LqhCPWPAs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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