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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '135248429d2a9cbc840fed8888fe036f46fd28cfa4e50dae137f337965080429' 
  AND token = 'W7uXrxG+xC4G5/wN/FrrHPI6W/KSaG1xNdJaSpmy2y4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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