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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ba47d49a9544f8023e0e04fe7f922b652b11f313c45a586e1c40d30232f1b9b' 
  AND token = 'Pnl7mUxrOvQ+xhkECEMdkdMQ3LYbjS9Z2dboVJa7c6E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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